Proponents of stretching-only classes claim they provide a deeper, more beneficial stretch than traditional flexibility classes, like yoga. But they could give your fitness regimen an extra layer if you're willing to pay and value flexibility. If you're a healthy gym-goer, probably not.

So, are these classes worth the hype-and more importantly, price-tag? The company doesn't list session prices on their website, instead requiring potential clients to contact one of their studio locations just to request a session. (A 30-minute stretching session costs 55 bucks a 60-minute session, $100.) Meanwhile, Stretch Zone says their sessions will enhance your athletic performance by easing residual muscle tension, improving reaction time and spatial awareness. Lymbr, for example, claims personalized stretching will increase mobility and speed, and improve overall athletic performance. Thanks to the influx of boutique studios, classes, and race participation over the past several years, weekend warriors and fitness junkies alike are now flocking to studios like Stretch Zone and Stretchlab for classes and one-on-one stretching sessions designed to help them recover from their intense workouts. Assisted stretching is now a bonafide fitness trend. You know that you should warm-up and cool down properly to make the most of your workouts-but for some exercise fanatics, stretching has become an activity in and of itself.

Stretch zone